diameter
A circumference is the set of all points in a plane that are at a fixed distance from a given point, called the center. The equation of the circumference is:
\[
(x – x_0)^2 + (y – y_0)^2 = r^2
\]
A circumference is the set of all points in a plane that are at a fixed distance from a given point, called the center. The equation of the circumference is:
\[
(x – x_0)^2 + (y – y_0)^2 = r^2
\]